1989 gmc s15 v6 4.3 - ecm?
My wife'* first car/truck is out of the garage after about 10 years and runs pretty good. It'* a bit rough so after a tune up I took a new code reader to it and wanted to see what I got back. OMG!!! I have the following codes:
14 - Coolant Sensor - Signal Voltage low or shorted
31 - CAM Sensor Circuit Problems, Park/Neutral Switch
32 - EVRV Error, EGR Valve Diagnostic Switch - closed on startup, MAP Sensor Signal - low voltage
33 - MAP High Voltage During Idle
34 - MAP Low Voltage During Ignition On
41 - CAM Sensor Failure, Cylinder Select Error, EST Circuit Open/Shorted, Ignition System Fault
43 - ESC - Circuit Problems, EST Low Voltage
51 - Computer Problem - Faulty, wrong or incorrectly installed PROM or ECM/PCM Failure
52 - Calibration Package Chip or ECM Fault or Oil Temperature Sensor Fault/Low Engine Temperature, Faulty or Missing PROM, ECM Problem, High Voltage
53 - System Voltage to High (>17.7 volts to ECM) or EGR System Fault or Alternator Voltage Not Normal or Vehicle Anti-Theft Fault
54 - Fuel Pump Circuit Fault or Mixture Control (M/C) Solenoid Fault or ECM Fault, Fuel Pump Relay
55 - ECM Fault or Oxygen Sensor Circuit Fault
I disconnected the battery after trying to clear the codes with my Innova 3140b and still could not clear them. At this point I think the ECM must be failing since there were multiple codes pointing to that and that could be causing everything else.
Anyone venture a guess or some guidance here? I have no clue what to do next other than the ECM and see what happens then...